test  2024-08-09T22:10:43.283000Z TestFramework (ERROR): Key error 
                                   Traceback (most recent call last):
                                     File "/ci_container_base/ci/scratch/build/bitcoin-x86_64-pc-linux-gnu/test/functional/test_framework/test_framework.py", line 132, in main
                                       self.run_test()
                                     File "/ci_container_base/ci/scratch/build/bitcoin-x86_64-pc-linux-gnu/test/functional/feature_fee_estimation.py", line 468, in run_test
                                       self.sanity_check_rbf_estimates(self.confutxo + self.memutxo)
                                     File "/ci_container_base/ci/scratch/build/bitcoin-x86_64-pc-linux-gnu/test/functional/feature_fee_estimation.py", line 302, in sanity_check_rbf_estimates
                                       est_feerate = node.estimatesmartfee(2)["feerate"]
                                   KeyError: 'feerate'